<template>
  <div class="todo-header">
    <input
      type="text"
      placeholder="请输入你的任务名称，按回车键确认"
      @keyup.enter="addTodoHandle"
    />
  </div>
</template>

<script>
import {v4 as uuidv4} from "uuid"
import { mapMutations } from 'vuex';
export default {
  name: "Header",
  methods:{
    //映射添加todo函数
    ...mapMutations(["addTodo"]),

    addTodoHandle(e){
      //判断输入的内容不能为空
      if(!e.target.value.trim()) return alert("输入的内容不能为空")
      //根据输入的值创建一个新对象
      const newTodo = {id:uuidv4() , thing: e.target.value , done:false}

      //把新对象提交到到仓库的todoList中
      this.addTodo(newTodo)

      //清空输入框
      e.target.value = ""
    }
  }
};
</script>

<style scoped>
/*header*/
.todo-header input {
  width: 560px;
  height: 28px;
  font-size: 14px;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 4px 7px;
}

.todo-header input:focus {
  outline: none;
  border-color: rgba(82, 168, 236, 0.8);
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075),
    0 0 8px rgba(82, 168, 236, 0.6);
}
</style>